JPH05325830A - Deflecting yoke - Google Patents

Abstract

PURPOSE:To enable regular winding and to obtain deflecting yoke having high accuracy by forming slots on the inner surface of a core with a predetermined interval, and winding the coil so as to be divided into toroidal multi-layers in the slots. CONSTITUTION:Slots 1A are formed on the inner surface of a core 1 with a predetermined interval, and a coil is divided into multi-layers for winding so that the electric wires adjacent to each other are not overlapped. Consequently, deviation of the coil is eliminated to enable the arrangement of the vertical deflecting coil. Since the number of turns of a coil in one layer inside a slot is divided into multi-layers, the total layer quantity is reduced. Arrangement of the coil is thereby enabled, and the deterioration of the characteristic of a deflecting yoke due to the deviation of the coil is reduced to obtain a deflecting yoke having a high accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke mounted on a color cathode ray tube (hereinafter referred to as CRT) for use.

[0002]

2. Description of the Related Art FIG. 3 is a plan view showing a conventional toroidal deflection coil, including a normal core {slot (winding groove).
Shows a winding state of “none”, and in this FIG.
Is a core formed by dividing a cylindrical body whose one end is wide open into two, and an electric wire 2 is formed on the core 1, and a wire is radially wound around the cylindrical center axis of the core 1. There is. Normally, as shown in FIG. 4 (a cross-sectional view showing a winding state of a normal core), this winding is
After winding one turn so that adjacent electric wires do not overlap, the winding mechanism shifts the winding.

However, in recent years, slot cores have attracted attention from the viewpoint of reducing heat generation and increasing deflection sensitivity of high-frequency compatible displays. Use this slot core
The state when winding is performed by the conventional toroidal winding method will be described with an example.

FIG. 5 shows that the slot 1 is formed on the inner surface of the slot core 1.
FIG. 3 is a cross-sectional view showing a state in which A is formed and a winding is applied to the slot 1A, the slot 1A has a width of 10 mm and a depth of 5 mm.
mm, and the electric wire φ0.
200 turns of 5 mm are wound by the conventional winding method, and reference numeral 3 in the drawing is the winding deflection coil.

In this case, when it is attempted to wind so that adjacent electric wires do not overlap each other during winding, the first layer is wound with 20 turns (10 mm / φ 0.5 mm) and the next slot is wound. Wind in the direction (arrow A direction), and so on, and after winding the last slot, turn back slowly, I will go winding from.

By doing so, the above-mentioned 200
It takes nine turns to wind a turn, and even without it, the slot core is divided into winding parts compared to a normal core (Fig. 3), so cores are slot-to-slot. Although it takes a long time to move the wire on the winding machine, more time is required, which deteriorates manufacturability.

Therefore, the number of turns (number of layers) that takes time
In order to reduce the number of windings, the number of turns of one layer is increased, but in this case, naturally, as the electric wires overlap and the number of layers increases, the electric wires are wound along the winding method in an offset manner, and the final coil is wound. The shape is an unbalanced coil as shown in FIG.

[0008]

Since the vertical deflection coil of the slot core wound by the conventional toroidal winding method is constructed as described above, the winding deviation of the coil occurs and the coil unwinding occurs. The balance and variability will increase,
There is a problem that it adversely affects the convergence and distortion (particularly the convergence) of the deflection yoke characteristic.

The present invention has been made in order to solve the above-mentioned problems, and there is no deviation of the winding wire, and it is possible to make an aligned winding, and it is possible to greatly reduce the deterioration of the deflection yoke characteristic. It is intended to obtain a deflection yoke, and also to obtain a deflection yoke capable of improving the waviness on the screen.

[0010]

A deflection yoke according to the present invention includes a core having slots on its inner surface and a core wound around the slots of the core. The deflection yoke is divided into multiple layers and arranged so that adjacent electric wires do not overlap each other. And a wound vertical deflection coil.

Further, a vertical deflection coil in which the total outer diameter of the electric wires wound on one layer is smaller than the width of the slot is wound around the slot of the core.

[0012]

In the vertical deflection coil according to the present invention, by aligning the desired total number of windings in one slot of the core into multiple layers, it is possible to perform aligned winding, and the winding can be performed without any deviation.
It works to improve convergence and distortion.

Further, in the vertical deflection coil, the total number of outer diameters of the wires wound on one layer is made smaller than the width of the slot, thereby reducing the total number of layers and shortening the winding time. With a relatively small number of windings, it works to improve the waviness on the screen.

[0014]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a winding state in a slot of a slot core according to one embodiment. FIG. 2 is a sectional view showing the final winding state of this embodiment. 1 and 2, reference numeral 1 is a core, and 1A is a slot formed on the inner surface of the core 1 at predetermined intervals.

Further, 1a, 1b, 2a, 2b to 20a,
Reference numerals 20b denote electric wires wound around the core 1, respectively, and the electric wires adjacent to each other are set so that they do not overlap each other during winding. Next, these electric wires 1a to 20
The winding method of a, 1b to 20b will be described.

First, in FIG. 1, the windings are wound up to the electric wire 20b in the winding direction A in the order of the electric wires 1a to 1b, 1b to 2a, 2a to 2b, 2b to 3a, and the electric wire 20b. After that, the winding on the side of the next slot C in the winding direction A is sequentially performed. After the winding of the last slot portion in the winding direction A is finished, the winding is turned back to the slot of the winding start, Make all windings as required.

As described above, the windings to the slots are set in multiple layers so that the electric wires adjacent to each other do not overlap each other. Therefore, there is no deviation of the windings. As shown in FIG. 2, the vertical deflection coil 3 can be wound in line. Also, since the number of turns in the slot in one layer is divided into multiple layers, the total number of layers (number of turns)
Is less than in the prior art.

Further, if the total outer diameter of the electric wires wound on one layer is smaller than the width of the slot, the total number of layers can be reduced, and accordingly, the winding time can be shortened and the number of turns can be relatively increased. Since the number of layers is increased in a slot having less number of lines, waviness (ringing) on the screen can be improved.

[0019]

As described above, according to the present invention, when wound on a core having slots on its inner surface, the windings for one slot are divided into multiple layers so that adjacent electric wires do not overlap. Since the winding is performed, it is possible to perform the aligned winding, and it is possible to significantly reduce the deflection of the deflection yoke characteristics due to the winding deviation and the deflection yoke deviation, and it is possible to provide a highly accurate deflection yoke. it can.

Further, since the total outer diameter of the electric wires of the vertical deflection coil wound on one layer is smaller than the width of the slot, it is possible to reduce the total number of layers, and accordingly, the winding time is shortened. It is possible to realize a multi-layered structure in a slot having a relatively small number of turns, and to improve the undulation on the screen.

[Brief description of drawings]

FIG. 1 is a sectional view showing a winding state in a slot of a core of a deflection yoke according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a final winding state according to the embodiment.

FIG. 3 is a plan view showing a winding state of a normal core of a conventional deflection yoke.

FIG. 4 is a cross-sectional view showing a winding state of a normal core of a conventional deflection yoke.

FIG. 5 is a cross-sectional view showing a final winding state when a conventional deflection yoke is wound around a slot core.

[Explanation of symbols]

 1 core 1A slot 3 vertical deflection coil C slot

Claims (2)

[Claims] 1. A deflection yoke comprising: a core having a slot on an inner surface thereof; and a vertical deflection coil wound around the slot of the core in a plurality of layers in a toroidal shape. 2. The deflection yoke according to claim 1, wherein the vertical deflection coil has a total outer diameter of wires wound in one layer smaller than a width of the slot.